<!DOCTYPE html><html><head></head><body><textarea id="input" placeholder="write jade here" style="width: 100%; min-height: 400px;">p
  author
    != myName</textarea><pre style="background: #ECECEC;width: 100%; min-height: 400px;"><code id="output"></code></pre><script src="../../jade.js"></script><script>var input = document.getElementById('input');
var output = document.getElementById('output');
setInterval(function () {
  jade.render(input.value, {myName: 'Forbes Lindesay', pretty: true}, function (err, res) {
    if (err) throw err;
    output.textContent = res;
  })
}, 500)</script></body></html>